Hydrocarbon-burner.



R. HOFFMAN.V HYDRocAIusoN` BURNER.

Prmoulon Pimm ooT.ao. 190s. 'Patentd M'an 14, 191i 2 amus-SHEET 1.

UNITED STATES Per TENT OFFICE.

RUDOLPH HOFFMAN, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO AMERICAN STOVE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

HYDROCARBON-BURNER.

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To all whom 'it may concern:

Be it known that I, RUDOLPH HOFFMAN, a citizen of the United States of America, residing at Battle Creek, in the county of Cal` houn and State of Michigan, have invented certain new and useful Improvements in Hydrocarbon-Burners, of which the following is a specification, reference being .had therein to the accompanying drawings.

.The invention relates generally to hydrocarbon burners, and particularly to a stove burner especially designed for use in connection with the range type of gasolene stoves.

The invention consists in the novel con# struction of the burner, in the peculiar arrangement and combination of its parts, and in various details of construction as will be hereinafter set forth. l'

In the drawings,-Figure l is a plan view of the burner; Fig. 2 is a detached perspective view of the burner tube; Figs. 3 and 1 are views in sectional perspective and elevation of the generator, illustratingits manner of application to the burner tube; Fig. 5 is a plan view of a torch for initially operating the generator; Fig. G is a vertical section through the oven portion of a range, illusi trating the hood or protector for the burner; Fig. 7 is a view of the oven section, taken at right angles to Fig. 6; and Fig. 8 is a detached perspective view of the hood.

For the purpose of illustration I have shown the burner as of a size and form for heating the oven of the range, the burner tube being adapted to be placed beneath the oven bottom, but it will be understood that it may be constructed in various forms and sizes, according to different uses to which it is to be put.

In the drawings brieiiy described, the reference-letter A designates the burner tube, and B the generator so associated with the tube as to supply the requisite amount of vapor thereto, and to be itself heated by a sub-flame from the tube for maintaining the vaporization.

Where the burner is to be used as an oven heater it comprises a main section C, preferably in the form of an elongated loop, the arms or branches lying in a common plane, and the ends a Z) extending in proximity one with the other, as shown. IVithin the upper portion of the loop are formed a series of openings c, preferably diagonally extending Specification of Letters Patent.

Application led October 30, 1909.

Patented Mar. 14, 1911. Serial No. 525,550.

torch, as D, insertible within the chamber f.

provided for that purpose, thereby Vaporizing the gasolene or other hydrocarbon liquid within the supply conduit g. Upon opening the usual needle valve 7a, the vapor is discharged within the loop tube and is ignited at the end o, the flame being flashed back to the burner orifices c through an elongated slot o.

It has been found in practice that after the loop has been lilled with gas, on ignition at the burner end there is great liability of back tiring, or popping in, as it is ordinarily termed. To obviate this, I have provided the burner tube with a return-conduit or by-pass E Adesigned to carry the initial discharge of vapor within the burner tube immediately back to the end constituting the sub-flame, whereby a stronger flame is produced at this point and the ignition may be effected prior to the filling of the main section.

The preferred form of burner is shown in Fig. 2 wherein the by-pass unites, the two branches in proximity to the two extremities of the burner tube and connects tangentially with each branch so as to allow of the ready flow of vapor within and to discharge' from the by-pass, returning to the sub-fiame burner. Furthermore, the ret-urn conduit, as well as the receiving end portion of the loop, is preferably imperforate, so that the vapor will be conducted to the discharge end of the tube before any appreciable discharge of the vapor through the burner orifices takes place.

In a range construction, the generator and the burner pipe ends adjoining the generator are adapted to extend without the oven in a position where access can be conveniently had to the parts; and I preferably employ a hood, as F, adapted to be arranged over ythe sub-*flame burner and the portion of the generator against which the sub-flame plays, the hood serving to protect the parts and Vshield the flame.

In Figs. G to 8 inclusive I have shown the preferred form of hood, which is substantially a swinging door pivoted to the upper portion of a frame G fixed upon the oven side. This door is so proportioned as to cover the slot H through which the burner ends project, and entirely inclose the projecting portion of' the burner and generator, as shown in Fig. 6, thus preventing the Wind from disturbing the flame and preventing ignition of articles that may come in contact with the burner. I also form a trough I lupon the lower portion of the framework G immediately beneath thev generator to catch any gasolene or other oil that may leak from the burner. Y

What I- claim yas my invention is:

1. 'In a burner, the combinationy with a generator, ofk a looped burner tube formed with' a series of burner orifices and arranged with its ends adjoining the generator, the

latter discharging into the tube, and a connectlon between the branches of the loop near the generator.

9.. In a burner," the combination with a generator, of a looped burner tube having its ends extending in operative relation to the generator, and a cross conduit connecting tangentially with the looped branches 'near the generator.

VCopies of this patentmay be obtained for ve cents eeh, by addressing the Commissioner of Patents,

Washington, D. C'. 

